1 files changed, 38 insertions, 0 deletions
diff --git a/platform/windows/mupdfwinrt/Cache.h b/platform/windows/mupdfwinrt/Cache.h
new file mode 100644
index 00000000..e8c9801d
--- /dev/null
+++ b/platform/windows/mupdfwinrt/Cache.h
@@ -0,0 +1,38 @@
+#pragma once
+
+#include <mutex>
+extern "C" {
+	#include "mupdf/fitz.h"
+}
+
+#define MAX_DISPLAY_CACHE_SIZE 3
+
+typedef struct cache_entry_s cache_entry_t;
+
+struct cache_entry_s
+{
+	int number;
+	int width;
+	int height;
+	fz_display_list *dlist;
+	cache_entry_t *next;
+	cache_entry_t *prev;
+	int index;
+};
+
+class Cache
+{
+private:
+	int size;
+	cache_entry_t *head;
+	cache_entry_t *tail;
+	std::mutex cache_lock;
+
+public:
+	Cache(void);
+	~Cache(void);
+	void GetSize(int *width, int *height);
+	fz_display_list* Use(int value, int *width, int *height, fz_context *mu_ctx);
+	void Add(int value, int width, int height, fz_display_list *dlist, fz_context *mu_ctx);
+	void Empty(fz_context *mu_ctx);
+};